Forum Discussion

jcrhea's avatar
jcrhea
Explorer
Feb 06, 2016

Converter Questions - Replacement and want to charge faster

All -

I have a WFCO 8955PEC in my Class C RV. It has a 4kW generator in it I use to charge the batteries when off grid. I have two questions -

1. It charges slowly when my 2 12V deep cycle batteries are low (110Ah Each). I may get 15-20amps in them after an hour or so. I have a meter hooked up to one of the DC appliances in the Coach and it *always* says 13.6 when I am hooked to shore power. Does the converter feed one voltage to the house and then charge my batteries at a different voltage (say 14.4? or 13.2 in maintenance while still giving 13.6 to coach), or would it be the same? I have not measured the batteries at different times.

2. I am interested in getting a different charger/converter that will do it faster. The converter portion of my WFCO is working fine other than slow charging.. no flickering, and constant 13.6 which makes my lights nice and bright. Would you recommend I swap the converter charger board out with an upgraded unit like a PD or boondocker, or would you recommend I add a standalone, like the PD9260C and put it close to my batteries? I guess I would just leave the WFCO 8955 as is in that setup and run them both, right?

Thank you for your help.

John
  • Batteries will bulk charge at about 14.8V and taper down to 13.4V for float charging. 13.6V is OK. The charger, house loads and battery are all wired together and have basically the same voltage.

    From many posts on these boards the WFCO is junk and will not bulk charge your batteries.
  • smkettner wrote:
    1) Single voltage for everything. RV runs fine from 11 to 15 volts.


    Thank you for all the fast responses! On your point above, does that mean I am constantly getting 13.6V to my house batteries all the time? Even when they are full? That doesn't seem to make sense - wouldn't that hurt the batteries?

    I know the converter documentation states it sends 13.6 voltage to the house appliances and lights, I didn't think that meant the battery too!

    John
  • You can handle the replacement a number of ways but a new PD pushing higher amps would be an elegant way of doing it. As smkettner advises, solar is a great way to keep batteries charged. It is more accurate and efficient than I can accomplish it with multiple battery chargers.
  • 1) Single voltage for everything. RV runs fine from 11 to 15 volts.

    2) No Boondocker. Either PD or IOTA. Either will fit in the WFCO slot. ebay the WFCO or keep as a spare.

    3) Consider 200+ watts of solar ;)

About Technical Issues

Having RV issues? Connect with others who have been in your shoes.24,194 PostsLatest Activity: Jan 29, 2025